How to transform an image into a 1D data matrix by scanning it from left to right and then up to down? kindly send the code

How to transform an image into a 1D data matrix by scanning it from left to right and then up to down? Kindly send the code.

[Stephen23]

What format does the image have? If it is an RGB image, how do you wish to deal with the three layers of the image?

https://www.mathworks.com/help/matlab/creating_plots/image-types.html

Answer 1

[KSSV]

% 2D matrix 
A = rand(10,20) ;
B = A' ;
iwant = B(:) ;